Home / 1,215,429,029.11-1,676,778,456.35-813,672,217.86

Finding the Fourth Proportional to 1,215,429,029.11, 1,676,778,456.35 and 813,672,217.86

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Solution

The fourth proportional to 1,215,429,029.11, 1,676,778,456.35 and 813,672,217.86 is: 1,122,523,827.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,429,029.11 : 1,676,778,456.35 = 813,672,217.86 : x
  2. Step 2: Convert to fraction form
    1,215,429,029.11/1,676,778,456.35 = 813,672,217.86/x
  3. Step 3: Cross multiply
    1,215,429,029.11x = 1,676,778,456.35 × 813,672,217.86
  4. Step 4: Simplify right side
    1,215,429,029.11x = 1,364,348,045,434,103,296
  5. Step 5: Solve for x
    x = 1,364,348,045,434,103,296/1,215,429,029.11
  6. Step 6: Final answer
    x = 1,122,523,827.19

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.